Kathy Blackwell, David Blackwell (5) Blackwell, David (4) David Blackwell (3) Blackwell, Kathy, Blackwell, David (2) Kidwell, David S. (university Of Minnesota), Blackwell, David W. (pricewaterhousecoopers Llp), Whidbee, David A. (washington State University), Sias, Richard W. (university Of Arizona) (1)